We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Small rectangular Samsung battery with silver label and gold contacts

SAMSUNG

SAMSUNG EB-BR730ABE 3.8V 300mAh cell phone battery

SKU CH-V3DV-X2DF7

Original Samsung 3.8V 300mAh replacement battery for Gear S2 3G and Gear Sport smartwatches

  • Compatible phone brandsSamsung
  • Product typeReplacement Battery
  • Original Samsung OEM battery for Gear S2 3G
  • 8 V 300 mAh capacity powers the watch
  • 14 Wh energy rating matches factory spec
  • Tested working replacement for SM-R730 series

Genuine Samsung Gear S2 3G Replacement

This original OEM cell-phone battery carries part number EB-BR730ABE and is designed for the Samsung Gear S2 3G series including SM-R730 SM-R730A SM-R730V and related models. It arrives new and ready to install as a direct power-source swap.

300 mAh Capacity Confirms Fit

The 300 mAh rating at 3.8 V matches the factory specification for the listed Gear S2 3G variants so the watch will recognise the cell and report charge correctly. Buyers needing a higher-capacity pack or a battery for a different smartwatch line should look elsewhere.

How it compares

Measured against everything we stock in Replacement Phone Batteries, at today’s prices. Recalculated every night.

Price $23.99
Pricier than about 88% of the 868 comparable items (median $14.99).

Specifications

Product
Product typeReplacement Battery
Compatibility
Compatible phone brandsSamsung

Questions about this item

What does the 300 mAh capacity mean for daily use in the Gear S2 3G?

The 300 mAh cell stores 1.14 Wh at 3.8 V, giving roughly one full day of typical mixed use on the Gear S2 3G before needing a recharge.

How does the 3.8 V nominal voltage affect charging on the SM-R730 series?

The 3.8 V nominal voltage matches the original specification for the SM-R730, SM-R730A and SM-R730V models, so the watch's charger regulates current normally and reaches full charge without voltage mismatch.

More in Replacement Phone Batteries

Similar items